Senior Administrator, Windows

I. Job SummaryThe Senior Web Administrator (Windows) is responsible for the design, administration, security, and operational stability of enterprise web platforms hosted on Windows-based infrastructure. The position partners closely with application teams, infrastructure engineering, security, and operations to support complex web environments, lead platform improvements, and drive modernization efforts. The Senior Web Administrator serves as a subject matter expert for Windows Server OS, Windows web services, proactively identifying risks, resolving complex issues, and implementing best practices across the web hosting ecosystem. II. Essential Duties and ResponsibilitiesServe as the senior technical owner for Windows-based web platforms, ensuring availability, performance, scalability, and security of enterprise web services. Administer, configure, and support Microsoft Internet Information Services (IIS) across development, test, and production environments. Lead architecture, deployment, and lifecycle management of web servers and supporting components on Windows Server platforms. Partner with application development teams to support application onboarding, configuration, troubleshooting, and performance tuning. Design and implement high-availability and disaster recovery strategies for web platforms, including load balancing and failover. Perform advanced troubleshooting and root cause analysis for complex web, OS, and infrastructure issues. Implement and maintain security controls for web environments, including TLS/SSL, authentication methods, patching, hardening, and vulnerability remediation. Drive platform standardization, automation, and modernization initiatives to reduce technical debt and improve operational efficiency. Develop and maintain technical documentation, standards, and operational procedures for web platform administration. Support change management processes, including planning, testing, and execution of platform upgrades and maintenance activities. Monitor system health and performance using enterprise monitoring tools; proactively identify and remediate risks and capacity constraints. Act as a subject matter expert (SME) for Windows Server environment and provide guidance to junior administrators and engineering partners. Collaborate with infrastructure, network, security, and cloud teams to ensure seamless integration across the enterprise environment. Participate in on call rotations and provide escalation level support for critical incidents as required. III. Qualifications A. Required Qualifications Bachelor's Degree (accredited) in Computer Science, MIS or similar area of study or in lieu of degreeHigh School Diploma or GED (accredited) and four years of relevant work experience.5 years of prior work experience (in addition to education requirement).B. Preferred Qualifications IV. Physical RequirementsListed below are key points regarding physical demands, physical and occupational risks, and the work environment of the job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions of the job.Repetitive MotionsEye/Hand/Foot CoordinationSittingTalkingHearing Office: This job primarily operates in a professional office environment and routinely requires the use of standard office equipment such as computers, phones, copy machines, etc.V. Benefits At WM, each eligible employee receives a competitive total compensation package including Medical, Dental, Vision, Life Insurance and Short Term Disability. As well as a Stock Purchase Plan, Company match on 401K, and more! Our employees also receive Paid Vacation, Holidays, and Personal Days. Please note that benefits may vary by site. If this sounds like the opportunity that you have been looking for, please click Apply.ABOUT WMWM (WM.com) is North America's leading provider of comprehensive environmental solutions. Previously known as Waste Management and based in Houston, Texas, WM is driven by commitments to put people first and achieve success with integrity. The company, through its subsidiaries, provides collection, recycling and disposal services to millions of residential, commercial, industrial, medical and municipal customers throughout the U.S. and Canada. With innovative infrastructure and capabilities in recycling, organics and renewable energy, WM provides environmental solutions to and collaborates with its customers in helping them pursue their sustainability goals. WM has the largest disposal network and collection fleet in North America, is the largest recycler of post‑consumer materials and is a leader in beneficial use of landfill gas, with a growing network of renewable natural gas plants and the most landfill gas‑to‑electricity plants in North America. WM’s fleet includes more than 12,000 natural gas trucks – the largest heavy‑duty natural gas truck fleet in the industry in North America. Healthcare Solutions provides collection and disposal services of regulated medical waste, as well as secure information destruction services, in the U.S., Canada and Western Europe. To learn more about WM and the company’s sustainability progress and solutions, visit Sustainability.WM.com.Equal Employment OpportunityFor United States: WM is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, creed, religion, sex, sexual orientation, gender identity, national origin, age, disability, status as a protected veteran or any other characteristic protected under applicable federal, state, or local law. For Canada: WM is committed to the principle of equal employment for all applicants and employees, without discrimination on the basis of all grounds protected by applicable human rights legislation. Accommodations are available on request for candidates taking part in all aspects of the selection process. Please notify us if you require accommodation. Real IDIn order to travel by air or access federal property, federal law requires individuals have a REAL ID or an acceptable alternative. This position may require the successful candidate to travel by air for business reasons or service federal property. Accordingly, successful candidates must have, or be willing to obtain, a REAL ID or TSA‑approved alternative.What is the value of a WM job? At WM we know that the value of a WM job is more than a paycheck. It’s a way to create opportunities for you and your family. This is why we are constantly working to make WM a great place to work and grow a career. We Are WM is what defines the perks of being in the WM family – from benefits, to resources and engagement activities. We are People First. We are Committed to Your Growth. We Are Investing in You. We are a Family. We are Stable. We are Always Working for a Sustainable Tomorrow. Full timePosting Date: 2026-03-09